Middle burster



pril 25, 1933. C, H, wHlTE 1,905,022

MIDDLE BURSTER Filed Nov. 12, 1930 4 Sheets-Sheet l C. H. WHITE MIDDLEBURSTER April 25, 1933.

Filed Nov. 12', 14950 4 Sheets-Sheet 2` o3 :nl-:Eig llillEE-m C. H.WHITE MIDDLE BURSTER April 25, 1933.

4 Sheets-Sheet ."5

Filed NOV. 12, 1930 April 25, 1933. C. H, WHITE 1,905,022

MIDDLE BURSTER Filed Nov. 12, V1930 4 sheets-sheet 4 qu il 5 l/ f 0 lwww W w o um m- Patented Apr.Y 25, 1933` CHARLES H.

MIDDLE Y Applic'atialed noventa V `The present inventionrelatesgenerally to agricultural implements andinore partien-V `larlyftothe type of implement where "earth `working tools areattached"'directlygto "a tractor to be propelled thereby, andwhen soattached the plows or otherearth workling tools and the tractor jfunctions vas a unitary power operated implement.

More specifically, my invention is concerned with the provision of' animproved implement ofwthe above described. type where 'only two "furrowsare` made simul= tane'ously, the earth working tools lthrowing the soilto either 4side ofeach furrow, this .15 operation beingcommonly known aslisting;

j In certainl parts ofthe corn and cotton country forwhich my implementhas been particularly designed, it .is the'usualy procedureto 'gooverthe ieldto bef prepared v and vvform jridgesfand furr'ows 'therein.

Sometime later'fandfbefore vthe planting 1 operation, thebld ridges'faresplit by a mid dl burster, thus lforming new ridges where thel ,furrowswerefandfurrows where A the ridgeswere. lThissecond-ridging operationisso'metimes known as Lre-listing. fBecause of climatic conditions incertain sections of the corn and cottonV country itis essential tomaintain the ground in loose, 'nonpackedcondition on the topofthe ridgesmade duringl either or both of the listing operatiOnS'QSo far as Iamfaware, ew'if any of the implements-ofthe prior artf are soconstructed/as topermit the newly `formed ridges to remainfin a'loos'e'Vcondition, many of them'plements of the prior art beingso arranged thatone or-moreofthe support'- ingvwheels run on theV ridges just Vafterthey 'were formed. "f'Unless `this condition 'is com- ;0 pensated for insome way it frequentlyoccurs Ain certain sections of the country l thatfa poor stand is obtained Aon 'account of the jpaokingofjthe loose'soilin the ridgesfby the implement asy it passesibacl'r and forth Theprincipalobjech therefore, of inventionis `t'heprovision 'of a listerlor middle "bursterjwherein" the soil. 'tillingy toolsrare sfo positioned`with` respect' y to the` tractor that t .E SOneitherfthe front non therear wheels 'of a .lift-,4TisNT-lorrciefI f wnITE; oFMorLINE; ILLI'NoIs,Assreivon Toi-minima coMPANoF MOLINEILLINOIS, AcoRroRA'TIoN JorILLINOIS.v vf 12,1930, serial ,N o. 495,045,v

tractor ever need l run onv a ridgei formedf'by the tools. Asia'resu1t,vthe ".'soilisi main$` p tained inl'a loose, Vnon-packedcondition on Vthe top-Qdi the 'ridges which, las,:, i'lidioated above,is =very desirable, particularly lin ceri 5 tain parts: of the"country.Y Y pf f jj i l Another object of my 'inventionjwhi'ch ofjconsiderableimportance is v-the provision of yimproved means' forattaching the Isoil.tilling tools to the tractor .wherebyeachfof o the tools is positioneddirectly' back of oneof the rear or driving wheels of a tractor, a`ndthis improved. means may' take fthe'. form lof i two rearwardlyconverging 'means forv of the soil tilling tools, whichrmeans is pref,-"i

provide is strong yet relatively light-and is y especially formed asto.` permit easy attache'. mentand removal of the soijl'vtillingl'toolswhenand' if their.` removal y isfnecessaryffj addition, another objectofmy% inven 85 tion'i'sto provide-a 'lister ormiddleburster constructionwhichis adaptedto beeasily substituted for some1 of,` the 'lister'fattach- Vmentsiri use vatthejpresenttiine, particu? y larly those of thefour-rowtypejwhereit has -been found that nnderfezrtremely diculft 3*"operations the .customary' traction overloaded. f A ""fflfx Afs'till`-further .folojcfci'l 'of my inyention'lis the 'provision' j ofimproved and simplified 9 5 structurefor gauging the .operatin depth" ofthe soil tliflling toolsand alsoY le )pr vision of improved Vmeans"Yfori raising and lowering the tools to andfrom'foperative Y i SQl,billing PQS th? Pfefelirdim alo hole inthe forward end "of thestub beam38',v

whereby n when the boltV 41'V is tightened,`as by nuts 153, the castings:40 `and40, the stub beam38 andthe draft beams22 and23 are rigidlyandsecurely clamped together. The more sharply converging rear ends of thetool or draft beams 22'and 23 are formed so as 'to lievadjacent-.thestubbeam 38 as in Figure 2-and `they are secured to the.stub beam 38 by means of abolt 55. `The web portions of `thecastings .40and 40a are offset longitudinally thereof .to provide a semioircularrecess- '452L to accommodatethe bolt 41, as bestishown in Figure 7. TheVstub beams 38 arefeach formedvvith a curveA or goose neck 57 to whichis V'attached a soil tilling tool 58 of usual type, .preferably a listerplow bottom or any other soilsturning Etool for disposing the soil'oneitherl side thereof. BracketsGO in the form of angles having a portion611` adapted 'to engage over. the top of the beams 22 and 23, as bestshown in 'Figure 5, have a depending-apertured portion 62 for thereception of a crank axle 64 `journaled therein. Collars 65 are mountedon th'e'orank axle 64 andfsecured thereto, as by a set s'c'rew66,v soVasHto-be adjacent the 'angles 60? to thereby hold ,l the crankaxle 64in its transverse position.

. The' crank axle` 64 extends at .either` end beyond the beams 22 and23and at one end, preferably vthe outer end,.acrankf.portion 67 is formedso as to provide a spindle 68 on which lis journaled .the gauge. wheel70./ It will be noted from Figure 2 that the .crank portion 67l ofthecrank axle 64 extends downwardly and forwardly soaslto bring the gaugewheel 70 substantially` alongside the rear` wheel 3. It willalsobeobserved that rocking the crank axle 64 will serve tovadjust theoperating depth of the soil tilling tool 58. r

Each of the crank axles 64 are adapted to be rocked to adjust theoperating depth of the plow bottoms 58 by means ofa hand lever 72,onemounted on each of the inner beams 23 and 24 as best shown in Figurev4,I

and connected by means of alink 74 to an upwardly and forwardlyextending arm 75 rigidly secured, as by welding, to the inner end. oftheAcrank axlev 64, see Figure 5. The

:arm 75 is provided with a number of aperftures for receiving the y rearAendofthe link 74 in any one'of: ainumber of selected positionswhereby'the range Ofthedepthiadjusting means may l' beV varied. f The"hand :lever 72A has the .usual latch and sector mechanism 77, thesector7 of which secured to the inner beam of each pair.

1n`an implement of thistype it is desirable .tobeable to raise and lowerthe soil tilling tools' byfmeans of thepower of a tractor motor." Inorder to provide means .to this end I' connectthe swingingpower liftlcrank arm of the. tractor to a swinging link 8O pivotedat its upper'endto thev tractor, as at l81'1in Figure 1, -by means of a link or rod82.`l` The lower endof the `swinging link is connected by means of alink 85 which isl connectedat itsA end with theloop of a chain 86trained over and secured to a double sheave 87 .i The double sheave 87is mounted on a transversely extending lifting shaft88` whichcarries ateither side of the tractora lifting sheave 91, best shown in Figure 3.

\ Connected witheachlifting sheave 91 and windable Vthereon is aliftingfchain 92 ad-` justablysecured at its lower endV to a small A bracket93,- see Figure f5. The bracket 93 is formed at one end with acurved.slot to Vreceive one of-thelinks ofthe chain 92, the

walls of the'slot 95 being apertured to allow the pin 96 to passtherethrough and through one of the links of the chain 92. .The pin 96maybe in the formlof cotterkey which is removable so thatl the verticalposition yof l e the bracket 931on the chain 92 may benadjusted at will.At its lower end,thebracketV 9 2 is journaled for limited rotation onthe `innermost end of the .crank axle 64, as best shownin Figure 5. Thelimited rotation is preferably obtained byvirtue vof a radial slot 97formed in the hub portionlof the bracket 9,3 anda pin 98 secured'intheslot is in the form of an I-beam section having Vand the web portion104 interrupted `to allow the flanges 105 tovextend beyond the web.,-Vportion 104 at both legs of the angle. Thel horizontal portion of theflangesr105 are adapted to be clamped, as by bolts-107, to the. two barsand 101, while the kbars themselves are provided withV slots 110.

`Boltslll are' passed through these slots 110,

through an openinglformed in the'horizontal portionof the web 104 ofeach of theangle members' 103. Thus by tighteningthe bolts `107 and 111,thesev twobars 100 and: 101 and the angle members 103 are securelyand-rigidly secured together. The vertical .110 i of angle members 103.`Each angle member'V `ends turned at right angles to one anotherVportions of the flanges 105 are. adapted to i V`embrace and Lbe boltedto the stub beams 'y fgau-gexwheelslr. are positioned as close t'othefurrow opening tool 5.8 .as is' Y wheel and isfsubstantiallynot,,affectedv ,by the possible, beingrfpositioned justifar enough yaway:from the ,ou-ter, beams f 22 vand125- to provide clearance: Y Asiaresul-t, Veachv @turrow vopening. tool158 is tgan-ged byV its ownfgaufreother gauge .whe'el. .v

' :The: operation off-an implement inginy invention. is believedfetobenobvious 1 frornstlie above description. WildengoingV over'tlie fieldforfthe first tiniethefooperator preferably opens! up alternate urrows,that Y is, urrows Nos. l andi-5v going-up thegfeld ".215

andfurrows Nos.-5.and7 on the return trip.

Afterhe has completed thisoperatin he cuts 'lout the remaining urrows,that is,lfur

rows 2;.and Valigning up the ield and yfurrows 6 Vandff8 returning, vandso on.y Thespacing "of tlierear wheels is such-:that inout.-

; tingfoutthe. i'furrows as mentioned above the front wheels Vrun Yin`'one 'of the 'previously formed Jf-.ufrrows while the rearv wheelsnwiththe furrow .openers directly behind run mid- Y way'between thepreviously Yformed fur-A Y v-qiiach'iof the son einig weis or furrow'openers Vis adjustedfior depth by `the VcorreaV sponding hand lever 72,lwhich rocks4 the .30A

cranlr-axlelt-through-*the iinkfll to positionl ytheL gauge wheel 70vertically relatively j 'to Ythe beams22 and 23 or 2 4 and' Y25 andthestub-beam N-hen'th-e endv of 'arow is' reached fthe'operatorlmerely.trips the lpower littlgclutch mechanism whichlis veflf'ective 'to Y'swing the `power l-it crank-arm forwardsito implement is turned ly,through the' link 85 andthe 'lifting chain 8G lii-ts' pwardly on theinner end oilithe;

therebyvr raising the"soil'tilling; toolssfrom engagement with` theground.y iWhenxt/he around and readyA to start again', all the operator`has to do is tol'again trip the power lift clutch mechanism therebycausing "the `power-liit crank arm y13 to swing rearwardly,flconipieting`*a 'ufll revolution, which restores the parts .to

i the position shown in Figure' 2.

'manner as ane-original furrow opening oper-V Vv"The re-lls-tin-g ormiddle burstingf-opera-l- Y tionv is performed substantially inthe'saineationdescribedabove. VDuring .the yre-listing thefold ridgesfaresplitandthe soil deposited in the old l:furrows, thus ioriningfurrowsw-here'the ridges were and ridges where the old furrows were. Like; thefirst operation, in rer-*listing vthe operator vcuts vout 'everfy7,other liurr'ow irstY andY then goes over the lfield again, cutting outthe remaining furrows, the only difference between the re-listingyoperation. andthe first voperationfis that Y Ainthe vre-listing-operationjthe frontend rear wheels-run on Ithe topsofltherolclgf:ridges anzdfatheV gauge ywheelsgrun in the 4.old urrows,whereas in the irst .operation thef'fronzt gauge, Wheels-`l are concer-Yited to the specifcgstnuotu nauseas;

rear .Wheels as as; theffgaugefalwels f rf1 sartene allY run onA the`'oraigifrlialY It will beseemfhowever,

terial,whether:thetoolsiaregeuged- 12 original gro clxsuzrfaae.''01",1ff0m ofthelflid;

derstoodthat be la,

scribed, but, that, inactfw dely difii'enent means may Vbe employedythe; praoticeggof the'.l broaderaspectsiof my invention.4

. What I cla-im, therefore, ariel-k?k f-to( secure; by Lette-rs Patent?is :y A L l ,f 1. The combina`tion'with'aftraetor-` fing frontandrrearwheels, :of an: Implement n attachment comprising" a;Ytransverse draf-t Abari 'detachabiy IconnectedLwifth'the tractorvforward- .of :the rear wheels thereof, ja plu,-

rality of beams :extending lOHgg'zll:diinally of the tractorandattachedte, sai'dfhar-fearp working devices Von saidf 'bean/Ts*v directly*'ibe-`1hind. said rear wheelsggand power lift-mech,-

anism forraising and llowering the beaune. c v 2. yThecoinhnationwithtatrector;inelud-A ing frontend rear wheels, "o-:an izlilnplementattachment comprising-a,plurailityzo bean-xs extending generallyilongitudinallywot :the

tractor, 'plowing meansyaon; .safid ggbeanis;V sdrrectly behind said:rear@ Wheels, an'd y-'telde able fhitch lmeans connect-nig? thetno-ntpor,-

Jattachinent.comprisingzn'plunality olff beams extending substantially.lon'gitirdinallypf the tractor and y2fiorwarrclly othe zearfwlaeelsthereof; and; disposed oni both sidesroifjsaid rear wheels, rand;'Leanthworking device'sfxon ysaid ybeamsdirectlyibehndfsaidirearftractor wheels:KV Y if "2 4c.-'l`he`combinati-on.. withaa tractorinelud ing front and rear wheels,ofiainimplernent attachment comprising aaplurality ofbeams extending`substantiallyY :il'ongitudinally orf @sito "Y the tractor .and4cli-sposedw'on'.:bothsides Koi :sai-cl rear traction wheels,eanthv-'workingadevices von said v:beamsdirectly 'behindlisayid reartractor-1 wheels, and gauge lfwheels foon- Vnected to support therear''portionsozf.fsaid y y{beams-,1 -f

155.' Theicombination:mithin-trainen n prising ',irafme, 'frontisteering V:and maar L' traction wheels :supporting said f-ffnarne, afin-eter inountedffonisaid ramewandz opera-f Atively-vr connected -wizthsaid-vreartraetin wheels to propel the; tractor/Mandi aqpawer takefotl'device .fon the; tractor adapted tnfie lift the toolsfrom the ground.`

-5 either side of said rear traction wheels,

means pivotally connecting the front portions of said beams with saidtractor, earth- 'working devicesmounted on the `rearjportionsof saidbeams in proximity to the-position of said rear traction.v wheels, anattachl'ment frame adapted .for `detachable mountingonthe rear portionofthe tractor frame,

- a rotatable lifting shaft supportedzon said attachmentframe, flexiblelifting memberl adapted for winding on saidshaft and connected with therear portions of said'beam's forllifting the sameto transport position,

'and' power lift means operatively connecting said power takeoff devicewith Vsaid 'lifting shaft for rotating the latter.

6. An agricultural implement of the class described comprising thecombination with a tractor havingfspaced drive wheels, of a transversedraft bar secured to the tractor, a plurality of pairs of beamsconnected with the draft bar and adapted wto begpropelled thereby,thebeams of each pair so? arranged as tolie 'on'each- 'side ofa drivewheel, soil= tilling tools, each connected to onepair of beams, meanstoeifect such connection, and means to raise and lower Jthe beams. t

7. An agricultural implement of the class described comprising thecombination with a tractor `having spaced drive wheels, of `atransversedraft bar secured to the tractor, a plurality of pairs ofbeams connected with the draft bar and adapted tobe propelled thereby,the beams of each pair so arranged as to lie on each side of adrivewheel, soil tilling tools, each connected to one pair ofbeams,"means 4to effect such connection, and i means adapted tofengagethe ground forconf trolling therposition of said tools. p l 8. Anagricultural implement of the class described comprising the combinationwith a tractor having spacedkdrive wheels, of a transverse .draft barsecured A to the tractor, aplurality of pairs ofV beams connected withthe draft bar and adapted tobe propelled thereby, the beams of each pairso arranged aste lie on each side of a' drive wheel, soil tillingtools,eachconnected` toone pair of beams, means to effectsuch connection,gauge means for gauging the position' of said tools relative' `to theground, surface, means` for controlling the, gauge means, and means to9. An agricultural' implementv of the `class described comprisingY thecombination with a tractor having spaced drivejwheels, of a transverse ydraft bar 'secured to `the tractor, a plurality of pairs ofbeamsconnected with the, draft bar and adapted to be propelled thereby,the beams of each pair so arranged Y as to lie on each side of ia drivewheel', soil tilling tools,feach connected to one pairlof beams, meanstoeffect suchconnection,a

crank axle mounted Aon `each of said pairs ofV beams, a gaugewheel'fjournaledoni each crank axle andl adapted to support' thertooland beams in spaced, relation' withthe groundsurface', means to rock thecrank axle to gauge the operating depth of said-tools,

and means for Vlifting the beams and tools'.

`free of the ground.,j

l0. An *agricultural iimplementiofi;

class. described comprising theiicombination' with va tractorA havingspaced drive wheelsV and a motor, ofa transversddraftfbar 'sel` cured tothe tractor, ra,,pluralitylof pairs fof beams connected i, with* thedraft bar ,and adapted to be propelled thereby, ,the beams ofeach pairso arranged asto. lie on; each v side of a drive wheel, soil tillingtools, keach connected to Vone pair'of beams,- means to effectsuchwconnection, a crank axlefmount-j ed on each of said pairs oflbeamsagauge lwheel journalled jon V,each crank axleVV ,and adapted to,support: the tool and Vbeams spaced relation` with l,the ground`sur-face,

operating depth of ssaidc, tools,` .and-,f means adapted to be actuated'fromthe motor Lfor Y v raising and i lowering the beamsfandtools'.

1l. An agricultural implement of the? class `t5 Vdescribed comprisingthecombinationwith i 'a V tractor having spaced drive wheels and 9. 'l

motor, of a transverse draft vbar]securefdsto the: tractor, a plurality;of pairs!i of beams connected with the draft `barl and: adapted `t0 bepropelled thereby, the beamsofeachpair so; arranged as to lie on eachside ofi a drive wheel, soil tilling tools, each connected to one pairof beams,means toeifect such connection, a crank axle mounted longeachof said pairs of beams, agaugewheeljournaled on` each crank axle andadapted` t'osupp'ort `the tool and `beams i. in v,spacedrelation withdescribed comprising the combination with a tractor -having, spaceddrivey wheels and 1 a motor, f of a fixed Atransverse draft.` bar; ay

beam pivotedto the bar, a'fcrank a'xle vmount'- Vioo ed on the beam, agauge wheel on saidzc'liank Y axle, and means adapted, {tog-rbc actuatedthe motor` and. including` :a flexible; element secured-toethecrankfaxle for raising vand lowering saidbeam.- 5 l *L w13. Anagriculturalimplement of the'class described comprising the-combination with atractor `(having. spaced E drive. Wheels; and

la motor, of a draft barmounte'd on theftrac tor forwardly of saidwheels,ja beam' pivoted L90 means to rockthe .crank axle,l to.: gaugethe' Y t y Y l2. -Anagricultural implement 'ofthe class iis;

f 'een I otlreffbarfa -erankfaxlemonnted on'the Y tl-jbeam,f""sadgfirst. named beams converging rearwardly and secured to "said v,Itoolbeam, and means'adapted to be actuated" said motor forfrai'sin'gandlowering said deseribedcolnprising the combination With 'ataeter'havingyspaceddrivey Wheels and a f motorfof a draft bar, a Lpairof'beaniscon'- nee'tediat their forwardy endsV With saidv ybail Ve'oofeni'braee 'oneE .of-f :the drive4 Wheelszarid 'convergingreargvardrlyfand' secured fto 4said.

oe; "beam, .va-'rid'means adapted to be actuatf fai-d motor'foi" raisingand lowering agricultural-f implement *fof L: Athe describedvcoruprising I the combination f yFa`ftraetorleavingspaced drivev:Wheels and'la Inotor;v todi'a draft' bar, apair of v'beams'eonne'etedatftheixr f'o'rvvardends with' Ysaid,lIlziarfat.spacedpoints:thereon, 'asoifl :tillingwY l 'the combinationYVwith Y aai-tractor l liavmgfa Y- j motor, of` a "draft bar,"Y a4*longitudineilyV exf-Y f ltool beam, saidrrst named `beams vextendingion- 'opposite'` sides offene. of the driveI YWheels eenn'eeted 'tor theforwardl portion of' the vsoilt,illi'ng tool beam ,immediately in rearyof class:'.deseribedeeomprsing theV combination with a tractor having.spaced.' ld rive. fiwl'ieels,

firstI naned beams extending substantiallyl positidned onk eitlier .side'oonejodl the drive f 'Wheels-and*converging; rearwardlmeansenneetingthe:longitudinally beams :to the l'ongitu dixnalv beams andbehind Y- the, ydrive Wheelr',s'a1d means r`eo'xnp'IT-ising." 'atransverse tlie toolffbe-anzrY and vmeans for `Clamping ythelong'itiiidfir'ialiJV bea-nis `converging rearwardly *Anagrienltnral.implement of the class ,A ed poi/nts thereon,- Va* .soilktillingl rtool l *fbeamp'sa'i-d *rs'ti named jbearns being adapt-Vvoth-a; draft'fbargfa-pair `of `beams connected at Y theirfliorwardffends. With'said-'bar aia-spaced l Q points ztl-Iereen,asoil-t'illiI-ig` tool b'eam,;.said

rearward rflonfgitudinally 'ofthe tractor',.fon-e' wel, trennt-iso`that-'the ltt-ervnesfbetween the members .to thefbeams, the rearendsfolftheto engage'. the toolbeam,'and means Vconnecting;saide'nds'tol the tool `bearnrf f f 18. Anagricultural implement oftlieclassdescribed comprisingv the"r` combinationgwith a ltractor havingspacedf'drive I-vvheels zan'd-a motor, of a-fdraftbar, a ypairvofifbeamsicorr- -neCted "at their f forward endsewithV vvsa-id# barat/spaced points thereon, asoilitillingtoo'l beam, ,said .rst-jnamedbeamsY vextending substantially Arearward longitudinally, "ofzthetractorfonepositi'oned oneither side'orlfon'ey -ofzthe drive Wheelsandbonvergifngreai- Y g Wardly, means.' `conneting' the longitudinalbeams to Vthe to0lfbeamso fthat theflatter V Vlies between-thelongitlidinalfbeams andgebe- S01 'hi-nd' thev drive Wheel, said .meanscomprising a transverse-member yloetvveen 'each lo:llgitudir-` Y nalvbeam and theltool'beam and;'meansy for clamping the members 'tetlre-beamsnthe rear ends of' the ilongitrid-inalfbeamsifcentergingrearvva-rdlyto engage theme01- beam, and means: .rigidly yconnecting.said endszto' the f toolbea-m, and powereonneetionsadapted toyl'lowering said beams.; v

lbe laetnated byJ-the motor "forljra" ingand V the. Combination with `,aYtractor'fhavin'gTa the vother end of; saidv beams, a Cranlraxlelournaled von fsaidbeams the fel-ward ends n Hofsaidbeams. being..spacedf apart adi'stanee vdi'erent-tli'an the rear 1endsthe*reof,'famial. gauge,Wheel ,supportedV on the Vcrankaxle@00 near fone endthereof'.i 1 1 ,f l n 1 `20. An agricultura-l implrementfcomprljsmg imamY to be.actuated "by the *meter-ana connected ),vvitlir theether eil-diorlrtHe-'beam v for raising and lowering'*tliejteolsaidlast 1 named meansineludingvfa Vinem-bere]min-nflied j Vlimited 'rotation thereon.

on 'one endl of, the orank'axlefand g5 215. An 'agrieltii'ral implementv theco'nzlbinatior'i` with" motor', of za, draft bar;

f b 1V .Y tending beamfpivoted near one Y'ei\i`d".to dmabuf ,S011rwine-fool Carried: by; aan y beam, a .orankf-axlejonrnale' ongs'ai beam,

ci gaugey Wheel-.Supperted) nea-r one endqthereoif, pow-e adapted jto.be actuated fby the Iiiotofrf:` and y,connected vvvitli I. the other'iendg of, the-Q-bearn.,

for raising` andloweringthef-toolgsaidlast Y? nalednamed meansincluding-a member j onA one 'endof thev crank faxle' and ylimited-rotation thereon, and;meansftoralk.-` E1 -130' i 'Y`-19'.An'agriculturalimplementcemprising Anear one end'thereofgandpovver'eonneetions 'm0 g Y prising a pair of clampingmembers adapted justl'l the operatingl position of the soil tilling too22. In an agricultural implement, the combination with a supportingframe, of a transverse draft bar carried thereby, a Vsoil tilling tool,a split tool carrying beam structure comprising separated parts pivotedto the draft bar and formed for connection(` with the tool, and meansforeffecting such connection. f n i 23. Inan agricultural implement, thecombination with a supporting frame, of a transverse draft bar rockablycarried by said frame, arms secured to said bar, a soil tilling tool, asplit beam structure comprising a pair of fore and aft extending barsconnected with said arms at one end and extending rearwardly inconverging relation, said soil tilling toolbeingv carried by saidmembers adjacent their converged ends, and

spring means for resisting rocking movement of said draft bar. Y

24. In an agricultural implement, the combination with a supportingframe, of a soil tilling tool, a split beam-structure compris-l ing apair of fore and. aft extending bars pivoted to the frame Vat one endand extending rearwardly fin converging relation, a stub beam for thesoil tilling tool, means connecting the stub beam tothe bars com-`connecting the stub beam to the bars com-` prising a pair of clampingmembers adapted to be received between said bars and having adjacentclamping faces to contact with the stub beam near one end thereof,boltmeans for securing the clamping members in engagement with the stubbeam and the bars,

bearing brackets secured to the bais by said clamping bolt, and gauging'means for the soil tilling tool including apart carried by saidbrackets.

26. In an agricultural implement, the comf bination with a supportingframe, of. a soil tilling tool, a split beam `structure comprising'apair of fore Zand aft vextending bars pivoted to the frame at one-endand extending' rearwardly in converging relation, a stub beam for thesoil tilling tool, means connecting the stub beamto the bars comprisinga pair of clamping members adapted to be received between said barsandhaving ing :soil tilling tools securedto their rearadjacent clampingfacesto `contact with the stub beamnear one end Athereof, bolt means forsecuring the clamping members in engagement `with the stub beam and thebars,

bearing brackets 'secured to the bars bysaid clamping bolt, and meansfor raising* and c lowering said beam' structure including -a vpartcarried bysaid brackets.

A 27. In an. agriculturalimplementati the t combination with asupportingframe, of a soilitilling tool, a split-beam structurecomprising apair offore andaftextendinggbarsv V pivotedto .the frame atone end and extendingl rearwardly in- `converging relation, a stub beamVfor the soil tilling tool, means connecting the stub beam "to, thebarscomiprising a pair of clamping members adapted to be' received between'said-bars andfhaving adjacent clamping `faces `to contact with thestubv beam near foneend thereof, andgbolt means for securing the4clampingI members in engagementwitli the stub beam andthe bars, saidrearwardly extending bars being bent in'frear' of said stub' beamconnecting means so as `to convergeat a greater angle,

'andmeans connecting the rear ends of said bars to Jthestub beam atapoint spaced; from the first named iveonnection, Y f i Y 28.1Anagricultural implement comprisl i. l,

ing a supporting frame, a'draft connection, a pair'of tool beams, eachcomprising af split beam v"structure includingfa -pair lof beam membersspaced apart at their forward `ends and pivoted to thedraft connectionand havving soil-tilling tools secured to` their rear-- ward ends, andmeansrigidly connecting the soil tilling tools together'. i f

29. An agricultural implement comprising asupporting frame,Y a draftconnection, apair oftool beams, each comprising a split beam structureincludingv a yipair of beam members 4spaced apart attheir forward ends fand pivoted to the-draft connection `and havward ends, and meansrigidly' connectingA the soil tilling tools together, saidmeanscomprising a pairbf clamping bars andl angle members connected atone'rend to the tilling tools' and at the other end lto the clampingbars. 'f

30. The combination with a tractorfinclnding front and rear Wheels, ofan imple-A ment 'attachment comprising' a/plurality; of rbeamsextendinglongitudinally of the tractoi', soil'engagingmeans on said`beams directly behind said rear wheels, and yieldable hitch meansconnecting said beams with the tractor. I V

31. An agricultural implement of the class described comprising thecombination with a tractor having spaced drive wheels and a motor, of adraft bar, a pair of beams connected at their forward ends with saidbarVv at spacedpoints thereon, Va soil tilling tool,

said beams converging rearwardly, means j no ' fr fseelrringsaid tooltno-fthe rear jofsaid beams,

andfmeans adapted "to be actuated by .said

' Amotor for Yraisinigfand-lowering said beams. 132. `A nf, agriculturalvimplement of the class 'described' Comprising the combinationJwithfatraetor havmg's'paced'drve, wheels Y andra* motor, :of a draftbarl Carried bythe w tractor forward ofsaid drive wheels, aipair, o' ,ri. Y of beamsnc'ennected .at their forward SendsA withsad baratlspacedQpoints; thereon, a

' soil. till-,ing tool, said lbeams extendingepn opposite sides'V fof'one Yof the vdrive v"wheels -andj-eonnectedwith ythe soil tilling"tool/in rear of f'saidfdrivenwheelg and means con- -Aneetingzsafd rear.ends of thefbeams with they tool,l l Y Y An yagnieultu'ral implement'off theV class-desoribed .comprising thencombination with-ia- `tractorhaving spaced drive wheels anda motor, offa draft'bajr,v a pair 'ofbeams zpfi-v'oted gf'atthei'r forward. ends with-saidvbar at spacedpoints fther'eon, la soiLtiHing tool, v V'sai'diify beams feitendingsubstantially rear-v wardlongitndifnallyfofthe tractongoneposie f tiOrred-fone-itheri side ,of onebthe drive` `wheels,means.connect-ingl the too-L withand f between l the iongitudi-nalfbeamsand behind i ythe drive wheehj'said means'fineludingtwo trlafrrsverseIme-mbersy between theV beams-fand means'or clan'iping the fmemberste`the beams,fandpower connectionsgadapted jtobe Y actuated by ythe meterfor raisinggjandY -low- :ering said beams.:

' '.f34- an yagricultural jimpiemenhlthe AtcQrnbirratior1-V,of a 'pair,of VI1ongi-tuffiinailv e-Xl tending beams, a'soil tilling, tool, andmeansl l y'for securing said tool tofandbetween` saidl beams* comprisingtwo transverse vmembers extending betweenthe tool and thebeams:andfmeans 'for ,clam-ping' the -to'ol and trans y verse memberstogether. f 35.` In an yagrieultura-l members and saidV members 1 tofthe sbeams,

and means for -contro11i ng 'k the operating imams nnplementgg-ztheacombmation with -alsourc'e -o'fjd-ra'ft; efja .pair

of beams extending therefrom,y 'ay 'soil 'tilling f K toot, means ,forConnect-ing said Vtool with the beams-comprising -two transversegmmbers

